Lubricating means for axle bearings of vehicles



w. LEHMANN 1,919,113

LUBRICATING MEANS FOR AXLE BEARINGS OF VEHICLES July 18, 1933.

Filed Oct. 26, 1932 S [VIZ lNweN'tor" WLe 1111131 IIIIIII/ "3,UFNITEDRSTATESV 1 wnflmannnmniviv, or WUPPEnTAL-E ERFELDQ GERMANY, ASSIGNOB. TO-WALTEB I may comprise a ring provided with seg-.

ments, arranged to pass, during its rotation,

Patented July 18, 1933 PEYINGHAUS, '0F"EGGE,7 NEAR vo MARs'rEImrUHR, GERMANY L L BRICATINGMEANS FOR AxL'EBEnnINGs on VEHICLES J a Application filed October 26, 1932, Serial no. mum in eerm a jebmar ao, 193i.

It is known to lubricate axle bearings fromabove by means of' an oil-carrying disc, which rotates in an lup'wardlyradially tapered groove and causes the, oil to, collect just before its highest point, whence it is forced laterally through ducts'to the point to without being utilized, viz., without being caused to collect andproduce a pressure which'would force it to enter the side duct and run towards the point to be'lubricated;

It will thusbe seen that in the known method of conveying the oil, the lubrication of the bearing cannot take place immediately after the starting, since the disc has first to be rotated until it reaches a certain speed at which oil can be forced into and along the delivery duct. But in the meantime the bearing may have run hot.

The object of the present invention is to avoid the drawbacks above referred to.

The lubricatingmeans according to this invention consists of a rotary disc which through an oll-conveying groove which gradually decreases axially in the direction of rotation until it is equal to the gap which is just sufficient to allow the oil-carrying disc to rotate through it, the said tapering of the groove extending up to the connection of the oil ducts which lie. directly in-front of the highest point of the disc and lead to the points of lubrication.

The oil-conveying groove is open at its lower end and is formed between the collar of the bearing brass and a member connected to the said collar and secured in ,position by a projection and it may form part of the cover of the axle box casing.

The accompanying drawing illustrates, by a way of example, one mode of carrying the invention into effect.

. F1. 1 isla longitudinal sectien through 1 y the 'riliddle ofthe axle bearing,

Fig. 2 is a cross-section along the line L M in Flg. 1 seen in the directionof the cover, F g. 3 illustrates on the rightrhand; side,

the same cross-sectionlas shown inFig. 2 but i g in he Opp d ection and on the left-hand ,side a cross-section 'alongthe'line N 0 in Fig. 1.]

Fig. 4 is a cross-section along the line 1nFig.3,

Fig. 5 is a cross-section along the line E'F in Fig. 3, i a Fig. 6 isa cross-section along the line GH in Fig. 3, and- 7 i lineJ-K in Fig. 4E. t

In the drawing, a is theaxle, b the axleboX casing, a the cover of the casing, d the bearing brass, e the collarformed on the latter, f the segment-supporting ring of the oilv 5 ,Fi'g. 7 is. a longitudinal sectional ong the carrying disc, g the segments. of the latter, h a

the member which limits the oil-conveying groove on the one side and which is screwed on in front of'the bearing brass collar,i the tapering groove which is formed between the said collar and the said member, In the overflow oil ducts formed in the member h, l

the oil ducts formed in the collar eand m are the collecting and delivery channels formed in the bearing brass and leading to into the tapering groove in; the same manner as in the case of formation ofan oil film in a thrust bearing, sothat the pressure of the oil is continuously. increased in the-groove up tothe highest point of the disc, which pressure forces the oil just before the highest point laterally into the oil delivery channels of the bearing brass. In this way also the oil which tends at high speeds to fly hereinbefore dey away just before it reaches the highest point is utilized for the product-ion of the pres sure in the gap and at low speeds an-efficien't oil-delivery up to the points of lubrication curs with centrifugal lubrication, at which speed the oil is neither thrown off nor drips,

.is avoided in the construction according to Further, the indisthe present invention, criminate splashing of the oil which, in the case of centrifugal lubrication is the real reason of einulsification and formation of froth is avoided because, immediately upon the oil leaving the oil bath, the oil is sucked into the groove and is thus positively set in motion.

The construction according to the present invention is therefore especially suitable for high speeds up to 150 kilometres per hour. f p

" "the groove through said ducts and back to What I claim is v v 1.' An axle bearing having means for lubricating it and comprising in combination an axle bearing brass, an axle box casing, a rotary'oil-carrying discfconsisting of a central vpart and projecting segments thereon, a collar attached to the bearing brass and a member attached to the said collar and forming therewith an oil-conveying groove which gradu-' ally decreases axially in the direction of rotattio'n until it is equal to the gap which is just suificient to allow the oil-carrying disc to rotate through it,['the said tapering of the grooveextending up to the connection of the oil ducts which lie directly in front offthe highest point of the disc and lead to the points of lubrication, the said segments of the oilcarrying disc projecting into the said tapering oil-conveying groove. v v

2. Means for the lubrication of axle bearings through their upper portions, coinpris-.

ing an axle box casing, a bearing therein hav 'ing a member on the bearing and partially covering theend thereof, the bearing and member being connected to form between them a tapering groove, a rotary disc revoluble in the groove, said bearing having ducts extending from the upper portion of the narrower part of said tapering groove,said disc being operative to-raise the oil and force it from the wider to the narrower portions of the bearingparts;

3, Lubricating mechanism foraxle bearings comprising a bearing having a groove therein, an oil carrying disc rotatable and in the same; direction as the rotation of said disc until the groove is just suflicient to allow the, oil carrying disc to rotate through it, said bearing havingtherein anoil through said. groove, said. groove'gradually decreasing'in a direction axial of the bearing duct lying directly in front of the highest 

